Support: How to select all the leaf nodes of the parent node? : Syncfusion

How to select all the leaf nodes of the parent node?

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We can select all the leaf nodes of the parent node by just selecting the parent node by handling the AfterSelect Event handler.

private void treeViewAdv1_AfterSelect(object sender, System.EventArgs e)

{

TreeNodeAdvCollection tn = new TreeNodeAdvCollection();

foreach (TreeNodeAdv n in this.treeViewAdv1.SelectedNodes)

{

this.AddChildren(tn, n);

}

foreach (TreeNodeAdv n in tn)

{

this.treeViewAdv1.SelectedNodes.Add(n);

}

private void AddChildren(TreeNodeAdvCollection tn, TreeNodeAdv n)

{

foreach (TreeNodeAdv child in n.Nodes)

{

tn.Add(child);

this.AddChildren(tn, child);

}

Private Sub treeViewAdv1_AfterSelect(ByVal sender As Object, ByVal e As System.EventArgs)

Dim tn As TreeNodeAdvCollection = New TreeNodeAdvCollection()

For Each n As TreeNodeAdv In Me.treeViewAdv1.SelectedNodes

Me.AddChildren(tn, n)

Next n

For Each n As TreeNodeAdv In tn

Me.treeViewAdv1.SelectedNodes.Add(n)

Next n

End Sub

Private Sub AddChildren(ByVal tn As TreeNodeAdvCollection, ByVal n As TreeNodeAdv)

For Each child As TreeNodeAdv In n.Nodes

tn.Add(child)

Me.AddChildren(tn, child)

Next child

End Sub